pmd-ruleset.xml

<?xml version="1.0"?>
<ruleset name="euler PMD ruleset"
         xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd">

    <description>
        This ruleset defines the PMD rules for project "euler".
    </description>

    <rule ref="category/java/bestpractices.xml" />
    <rule ref="category/java/performance.xml" />

    <rule ref="category/java/codestyle.xml">
        <exclude name="DefaultPackage" />
        <exclude name="OnlyOneReturn" />
        <exclude name="UnnecessaryConstructor" />
    </rule>
    <!--
    <rule ref="category/java/errorprone.xml" />
    <rule ref="category/java/design.xml" />

    <rule ref="category/java/documentation.xml" />
    <rule ref="category/java/multithreading.xml" />
    <rule ref="category/java/security.xml" />
    -->
</ruleset>